Transition Metals and Coordination Compounds- Oxidation States of Vanadium

Chloro Complexes of Cobalt (II)

Color Fan

Oxidation States of Vanadium

Precipitates and Complexes of Nickel (II)

Precipitates and Complexes of Silver (I)

Formation of a Silver Mirror

Spectroscopy for Large Lecture Hall II

Bromo Complexes of Copper (II)

Colorful Complex Ions in Ammonia

Colors of Complexes of Transition Metals

Hydration of Cu (II) Ion

Iron (III) Thiocyanate Complex Ion Equilibrium

Precipitates and Complexes of Copper (II)

Precipitates and Complexes of Iron (III)

Relationship of Absorbed Light to Observed Color

Samples of Minerals

The Copper Mirror

Reduction of Permanganate Ion by Sulfite Ion

Slow Formation of Chloro Complex of Chromium (III) Ion

Oxidation States of Vanadium (II) with Permanganate

Oxidation States of Vanadium

 

Description: Yellow vanadium (VI) is swirled with Jones Reductor and will progressively change color until it reaches the violet vanadium (II). Vanadium (II) is oxidized through a series of colors by permanganate to a final yellow color.

Source: UW Card Catalog

Year: N/A Vol: N/A Page: N/A

Keywords: Oxidation states, Jones Reductor, Vanadium (II), Permanganate

Ratings:

Hazard: High

• Corrosive to metals
• Skin corrosion hazard
• Serious eye damage
• Acute toxicity hazard – oral, inhalation, dermal
• Aquatic toxicity hazard
• Specific organ toxicity repeated exposure – respiratory tract
• Oxidizing liquids
• Carcinogenicity hazard

Effectiveness: Good

• Good connection from demo to course material
• Results are clearly observable without guidance
• Time to results is low
• Reliability is good
• Mild effects are seen by audience

Difficulty: Medium

• Consecutive manipulations and transfer
• Training or practice recommended
• Manipulations are simple for most to perform
• Attention to detail is required
• Some intermediate steps to results

Safety Precautions:

• Eye protection required
• Gloves required
• Use of chemically inert surface
• Absorbent material on hand
• Avoid exposures to mists, droplets, or vapors
• Perform in a well-ventilated area
• Prevent release of reagents to the environment

Class: Transition Metal Chemistry, Redox Reactions

Division: General, Inorganic Chemistry, Analytical Chemistry

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